import { OnInit, ChangeDetectorRef } from '@angular/core';
import { Question, Option } from '../../../../../classes';
import { Subscription } from 'rxjs';
import { FormGroup } from '@angular/forms';
import { DndDropEvent } from "ngx-drag-drop";
export declare class QuestionComponent implements OnInit {
    protected cdRef: ChangeDetectorRef;
    question: Question;
    questionsFormGroup: FormGroup;
    constructor(cdRef: ChangeDetectorRef);
    questionFormGroup: FormGroup;
    subscriptions: Subscription[];
    questionId: string;
    ngOnInit(): void;
    ngOnDestroy(): void;
    refreshView(): void;
    addSubQuestion(): void;
    addTextOption(): void;
    onDrop(event: DndDropEvent): void;
    TrackByFn(index: number, option: Option): string;
    private createFormGroup;
    private removeFormGroup;
}